Table 2 Acceleration-based values from the Si-St and T-St-Si phases (N = 30)
From: Differences in trunk accelerometry between frail and non-frail elderly persons in functional tasks
Frail (n = 14) | Non-frail (n = 16) | U | d | p-Value | |
|---|---|---|---|---|---|
Median (IQR) | Median (IQR) | ||||
Si-St | |||||
t.stopwatch (s) | 7.03 (5.14 / 10.88) | 2.23 (2.01 / 2.49) | 13.00 | 1.255 | <0.001 |
x.acc.max (m/s2) | 2.11 (1.64 / 2.41) | 3.43 (2.06 / 4.03) | 49.50 | -1.149 | 0.009 |
x.acc.min (m/s2) | -1.08 (-1.88 / -0.69) | -2.94 (-3.81 / -2.06) | 30.50 | -3.801 | <0.001 |
y.acc.max (m/s2) | 2.89 (1.94 / 3.87) | 6.09 (4.87 / 7.04) | 15.00 | -1.972 | <0.001 |
y.acc.min (m/s2) | -1.47 (-2.35 / -0.59) | -6.29 (-7.88 / -3.55) | 0.000 | 2.622 | <0.001 |
y.acc.mean (m/s2) | 0.47 (0.31 / 0.94) | 0.01 (-0.39 / 0.48) | 45.00 | 1.069 | 0.005 |
rv.acc.max ( m/s2) | 6.41 (5.43 / 8.31) | 8.49 (7.56 / 10.78) | 58.00 | -0.803 | 0.025 |
rv.acc.mean ( m/s2) | 2.71 (2.11 / 3.64) | 4.12 (3.67 / 4.89) | 44.00 | -1.222 | 0.005 |
T-St-Si | |||||
t.stopwatch (s) | 10.42 (7.64 / 14.52) | 3.71 (2.88 / 4.01) | 2.00 | 1.966 | <0.001 |
y.acc.max (m/s2) | 3.13 (2.23 / 3.92) | 6.03 (5.01 / 7.68) | 26.50 | -1.389 | <0.001 |
y.acc.min (m/s2) | -2.69 (-4.17 / -0.96) | -8.49 (-12.1 / -5.23) | 14.00 | 1.723 | <0.001 |
z.acc.max (m/s2) | 5.94 (4.32 / 7.31) | 2.45 (1.96 / 5.89) | 62.00 | 0.818 | 0.038 |
z.acc.min (m/s2) | -2.99 (-6.13 / -2.52) | -6.88 (-8.51 / -4.34) | 35.00 | 1.329 | <0.001 |
z.acc.mean (m/s2) | 0.57 (-0.12 / 2.28) | -1.44 (-3.34 / -0.16) | 36.00 | 1.473 | 0.002 |
rv.acc.max ( m/s2) | 7.11 (5.22 / 7.72) | 10.65 (7.91 / 12.38) | 41.00 | -1.120 | 0.003 |
rv.acc.min ( m/s2) | 0.28 (0.19 / 0.47) | 0.71 (0.49 / 1.01) | 38.00 | -1.157 | 0.002 |
rv.acc.mean ( m/s2) | 3.03 (2.73 / 3.81) | 4.39 (3.24 / 5.27) | 45.00 | -1.202 | 0.005 |